#include "time_impl.h"

long long __tm_to_secs(const struct tm* tm) {
  int is_leap;
  long long year = tm->tm_year;
  int month = tm->tm_mon;
  if (month >= 12 || month < 0) {
    int adj = month / 12;
    month %= 12;
    if (month < 0) {
      adj--;
      month += 12;
    }
    year += adj;
  }
  long long t = __year_to_secs(year, &is_leap);
  t += __month_to_secs(month, is_leap);
  t += 86400LL * (tm->tm_mday - 1);
  t += 3600LL * tm->tm_hour;
  t += 60LL * tm->tm_min;
  t += tm->tm_sec;
  return t;
}